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Office of Scientific & Technical Information Technical Reports
251
Defense Base Closure and Realignment Commission
116
Congressional Research Service Reports
108
Texas Laws and Resolutions Archive
100
Texas Patents
57
Texas Attorney General Opinions
47
Government Accountability Office Reports
44
Technical Report Archive and Image Library
38
National Advisory Committee for Aeronautics Collection
25
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Texas Attorney General Opinion: V-588
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Price Daniel, regarding a legal question submitted for clarification: Fees of county tax collector for collection of county-wide school maintenance tax Article 2744e-3, Vernon's Civil Statutes, as amended.
Date:
May 26, 1948
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: V-589
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Price Daniel, regarding a legal question submitted for clarification: The necessity for the State Registrar of Vital Statistics to collect the statutory fee of fifty cents for certified copies of birth and death certificates requested for official use by a State Agency.
Date:
May 26, 1948
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Theoretical performance of some rocket propellants containing hydrogen, nitrogen, and oxygen
From Summary: "Theoretical performance data including nozzle-exit temperature, specific impulse, volume specific impulse and composition, temperature, and mean molecular weight of reaction products based on frozen equilibrium and isentropic expansion are presented for 13 propellant combinations at reaction pressure of 300 pounds per square inch absolute and expansion ratio of 20.4. On basis of maximum specific impulse alone, five fuels had the following order for any given oxidant: liquid hydrogen, hydrazine, liquid ammonia, and either hydrazine hydrate or hydroxylamine. Three oxidants with a given fuel had the following order: liquid ozone, liquid oxygen, and 100-percent hydrogen peroxide."
Date:
May 26, 1948
Creator:
Miller, Riley O. & Ordin, Paul M.
Object Type:
Report
System:
The UNT Digital Library
Experimental investigation of hot-gas bleedback for ice protection of turbojet engines 2: nacelle with long straight air inlet
Report presenting aerodynamic and icing investigations conducted in the icing research tunnel on a model of a turbojet-engine nacelle with a long straight air inlet in order to provide basic design criteria for hot-gas blowback systems. The most uniform temperature distribution was obtained with a bleedback of 4.4 percent at a gas temperature of 1000 degrees Fahrenheit and resulted in an average dry-air-temperature rise of 46 degrees Fahrenheit.
Date:
May 26, 1949
Creator:
Callaghan, Edmund E. & Ruggeri, Robert S.
Object Type:
Report
System:
The UNT Digital Library
Investigation of several clamshell variable-area exhaust nozzles for turbojet engines
Report presenting the results of several investigations of the performance of different types of clamshell variable-area exhaust nozzle far turbojet engines to determine the efficiency of that type of exhaust nozzle as compared with conventional fixed-area conical exhaust nozzles. The investigations were conducted at zero-ram sea level conditions on three different full-scale turbojet engines and using five different nozzles.
Date:
May 26, 1949
Creator:
Lundin, Bruce T.
Object Type:
Report
System:
The UNT Digital Library
Fabrication and Properties of Hot-Pressed Molybdenum Disilicide
Report presenting an investigation of hot-pressed molbdenum disilicide bodies produced by industrial processes at a temperature of 2950 degrees and a pressure of 3000 pounds per square inch. Results regarding the short-time tensile strength, stress-rupture data, compression strength, air-corrosion resistance, hardness, coefficient of linear thermal expansion, thermal conductivity, and density are provided.
Date:
May 26, 1950
Creator:
Long, Roger A.
Object Type:
Report
System:
The UNT Digital Library
Flight Investigation of the Aileron Characteristics of the Douglas D-558-I Airplane (BuAero No. 37972) at Mach Numbers Between 0.6 and 0.89
"Abrupt, rudder-fixed aileron rolls have been made with the Douglas D-558-I airplane (BuAero No. 37972) at Mach numbers between 0.6 and 0.89. Rolls were made at aileron deflections between one-eighth and one-half the maximum available deflection. The results obtained indicate that the aileron effectiveness is independent of Mach number and deflection within the range investigated" (p. 1).
Date:
May 26, 1950
Creator:
Thompson, Jim Rogers; Roden, William S. & Eggleston, John M.
Object Type:
Report
System:
The UNT Digital Library
THE OPERATION OF A PULSE COLUMN FOR THE PRODUCTION OF HAFNIUM-FREE ZIRCONIUM
None
Date:
May 26, 1950
Creator:
Robinson, J.B. & Tupper, H.T.
Object Type:
Report
System:
The UNT Digital Library
Survey of Nonmetallic Liquid Coolants for Nuclear-Power Piles
A comprehensive survey of the literature was made in an effort to identify nonmetallic materials of possible usefulness as liquid coolants. Materials having maximum melting points of 1000 deg F and boiling points of l200 deg F were considered, but boiling points above 2200 deg F were preferred. Melting points, boiling points, densities, heat capacities, and thermal conductivities were tabulated. Approximately 190 materials appeared to have melting and boiling temperatures in a suitable range. A paucity of thermal- conductivty and heat-capacity data prevented further estimates of suitability of all but nine of these materials. Of these nine nonmetallics, only sodium hydroxide appeared to offer possibilities when considered according to the NEPA formula. (M.C.G.)
Date:
May 26, 1950
Creator:
Shaw, H.L. & Boulger, F.W.
Object Type:
Report
System:
The UNT Digital Library
Texas Attorney General Opinion: V-1062
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Price Daniel, regarding a legal question submitted for clarification: Pay of State employee who does reserve military service on his vacation time.
Date:
May 26, 1950
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Wing-dropping characteristics of some straight and swept wings at transonic speeds as determined with rocket-powered models
Report presenting data gathered on a lateral-trim change or wing dropping that involves a rapid change of lateral trim with Mach number, which has occurred on several rocket-powered models used in roll investigations at transonic speeds. The data in this report demonstrates that straight wings with airfoil sections 9 percent thick or greater are susceptible to wing dropping between Mach numbers of 0.9 and 1.0. Results for straight, sweptback, and delta wings are provided.
Date:
May 26, 1950
Creator:
Stone, David G.
Object Type:
Report
System:
The UNT Digital Library
Boundary Disturbances in High Explosive Shock Tubes
From abstract: High velocity disturbances are observed to propagate along the walls of a high explosive operated shock tube in advance of the plane shock. Experiments are presented which determine the dependence of the geometry, energy, and velocity of the disturbance on such variables as the gas contained in the shock tube, the shock strength, and the roughness and composition of the supporting boundary. A model is constructed to explain the flow within the disturbance. Arguments are presented which show the disturbance to result from radiation originating in the luminous plane shock...The purpose of this paper is to present the results of initial investigations made in an effort to describe the phenomenon of strong shocks developed in a shock tube by the detonation of high explosive charge.
Date:
May 26, 1952
Creator:
Shreffler, R. G. & Christian, R. H.
Object Type:
Report
System:
The UNT Digital Library
A Large Diameter Vacuum Valve
During the preliminary operaton of a volatilization apparatus it became apparent that a large stopcock in the high vacuum side of the oil diffusion pump was quite unsatisfactory. Since it was necessary to mount the stopcock in a relatively inaccessible location, the difficulty of turning the plug and the consequent necessity of regreasing the valve approximately every week were real problems. Also, it became apparent that an increased pumping speed through the valve would be required. Since a larger stopcock was out of the question, a type of valve reported by Stern was modified in design and was bulit into the apparatus.
Date:
May 26, 1952
Creator:
Foster, K. W.
Object Type:
Report
System:
The UNT Digital Library
The use of Dicalite diatomaceous earth as a purge material in the 100 Areas. Final report on production test 105-3-MR
None
Date:
May 26, 1952
Creator:
Conley, W. R.
Object Type:
Report
System:
The UNT Digital Library
Employment of the Spiral Orbit Spectrometer to Measure PIon Production Ratios by Proton Bombardment
Plus-minus ratios for pion production by 340-Mev proton bombardment were measured at 13 Mev, 18 Mev, and 42 Mev with the use of the spiral orbit spectrometer.
Date:
May 26, 1953
Creator:
Sagane, Ryokichi, 1905-1969
Object Type:
Report
System:
The UNT Digital Library
The Surface Reaction Between Oxygen and Thorium
Abstract: The rate of reaction of oxygen with arc-melted and rolled iodide thorium has been found to obey the parabolic rate law in the temperature range of 850 to 1415 C at 1 atmosphere pressure. The rate constant can be expressed as k = 6 x 10⁷ x e⁻⁶³³⁰⁰/RT cm²/sec. The energy of activation, 63,300 cal/mole, has a probable error of 2,100 cal/mole.
Date:
May 26, 1953
Creator:
Gerds, A. F. & Mallett, Manley William, 1909-
Object Type:
Report
System:
The UNT Digital Library
Texas Attorney General Opinion: MS-43
Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John Ben Shepperd, regarding a legal question submitted for clarification: Authority of the House of Representatives to authorize payment from the Contingent Expense Fund for official telephone calls by members during the year beginning May 28, 1953, in accordance with House Simple Resolution.
Date:
May 26, 1953
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Texas Attorney General Opinion: S-44
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John Ben Shepperd, regarding a legal question submitted for clarification: Maximum compensation and expense allowance of county commissioners of Starr County.
Date:
May 26, 1953
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Decontamination and Remodeling of a High Level Chemistry Cell
None
Date:
May 26, 1954
Creator:
Coplan, B. V. & Smith, D. J.
Object Type:
Report
System:
The UNT Digital Library
The Effect of Blunt-Trailing-Edge Modifications on the High-Speed Stability and Control Characteristics of a Swept-Wing Fighter Airplane
An investigation was conducted on a 35 deg swept-wing fighter airplane to determine the effects of several blunt-trailing-edge modifications to the wing and tail on the high-speed stability and control characteristics and tracking performance. The results indicated significant improvement in the pitch-up characteristics for the blunt-aileron configuration at Mach numbers around 0.90. As a result of increased effectiveness of the blunt-trailing-edge aileron, the roll-off, customarily experienced with the unmodified airplane in wings-level flight between Mach numbers of about 0.9 and 1.0 was eliminated, The results also indicated that the increased effectiveness of the blunt aileron more than offset the large associated aileron hinge moment, resulting in significant improvement in the rolling performance at Mach numbers between 0.85 and 1.0. It appeared from these results that the tracking performance with the blunt-aileron configuration in the pitch-up and buffeting flight region at high Mach numbers was considerably improved over that of the unmodified airplane; however, the tracking errors of 8 to 15 mils were definitely unsatisfactory. A drag increment of about O.OOl5 due to the blunt ailerons was noted at Mach numbers to about 0.85. The drag increment was 0 at Mach numbers above 0.90.
Date:
May 26, 1954
Creator:
Sadoff, Melvin; Matteson, Frederick H. & Van Dyke, Rudolph D., Jr.
Object Type:
Report
System:
The UNT Digital Library
Report of material and equipment section`s activities at New York Shipbuilding Corporation during fabrication of AXC 167 1/2 starting May 18, 1951. Part 3
This report provides Part III through VI of the Material and Equipment Section`s activities at New York Shipbuilding Corporation. Fabrication, inspection, and testing of reactor components are detailed.
Date:
May 26, 1954
Creator:
Stewart, J.R.
Object Type:
Report
System:
The UNT Digital Library
Texas Attorney General Opinion: MS-133
Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John Ben Shepperd, regarding a legal question submitted for clarification; Letter Opinion No. MS-133
Date:
May 26, 1954
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
A Wind-Tunnel Investigation at High Subsonic Speeds of the Lateral Control Characteristics of Various Plain Spoiler Configurations on a 3-Percent-Thick 60 Degree Delta Wing
Results are presented of wind-tunnel investigations at Mach numbers of 0.60 to 0.94 and angles of attack of -2 degrees to about 24 degrees to determine the lateral control characteristics of spoilers with various wing chord-wise and spanwise locations and spoiler spans and deflections on thin 60 degree delta wing of NACA 65a003 airfoil section parallel to free stream.
Date:
May 26, 1954
Creator:
Wiley, Harleth G.
Object Type:
Report
System:
The UNT Digital Library
Aerodynamic characteristics of various configurations of a model of a 45 degree swept-wing airplane at a Mach number of 2.01
An investigation has been conducted at the Langley 4- by 4-foot supersonic pressure tunnel at a Mach nmber of 2.01 to determine the aerodynamic characteristics of several configurations of a model of a 45 deg swept-wing airplane. The basic configuratin had a wing with 45 deg sweepback at the quarter-chord line, aspect ration 3.2, taper ration 0.468, NACA 65A005.5 sections just outboard of the inlet and NACA 65A003.7 sections at the tip. The wing was mounted slightly above the body center line and an all-movable horizantal tail was located slightly below the extended chord line of the wing. Tre design incorporated twin wing-root supersonic inlets ducted to a single exit at the base of the fuselage. The configurations investigated included an extended nose length, a bumped-fuselage afterbody, an inlet droop, an lncreased wing aspect ratio, and a revised canopy shape. Configurations employing the wing of increased aspect ratio of 3.7, which constituted the bulk of the tests, produced about a 10-percent increase in lift and in longitudinal stability as compared with the basic wing of aspect ratio 3.2. There was a slight but masurable increase in minimum drag and maximum lift-drag ratio.
Date:
May 26, 1955
Creator:
Spearman, M. Leroy; Driver, Cornelius & Robinson, Ross B.
Object Type:
Report
System:
The UNT Digital Library